If you want a career where your skills will always be widely needed, plumbing is worth a serious look. In Illinois, plumbers handle water systems, gas lines, drainage, and more. The good news? You can get into the trade without a four-year degree-if you get the right training.
In this guide, I’ll explain the best plumbing schools in Illinois, what to look for in a program, and the steps for getting licensed.
How Plumbing licensing works in Illinois
Illinois requires plumbers to be licensed through the Illinois Department of Public Health (IDPH).
State Rule: You must either complete an approved apprenticeship or pass the Illinois plumber licensing exam after meeting eligibility requirements.
Illinois Department of Public Health
Here are the main steps:
Meet minimum requirements
At least 16 years old for an apprentice license.
High school diploma or GED.
Valid driver’s license and legal right to work.
Get an apprentice plumber’s license from IDPH.
Apply before starting training with a licensed plumbing contractor or approved program.
Complete training
Usually a mix of classroom instruction and supervised on-the-job training.
Most apprenticeships last 4-5 years.
Apply for the plumber’s licensing exam after completing your apprenticeship.
The exam covers state plumbing code, safety, and trade skills.
Training covers plumbing, pipefitting, and welding skills.
#1
Joliet Junior College
📍
Joliet, IL
•In-state option
Located in Joliet, IL Joliet Junior College is a institution focused on career-ready training. Signature programs include Automotive Technician, Automotive Technology, and Beauty Cosmetology.
Competition for good programs can be high. Here’s how to improve your chances:
Apply early-some. Programs only accept new apprentices once a year.
Brush up on math, especially fractions and geometry.
Be prepared for an aptitude test.
Have a clean driving record and. Pass drug screening.
Show up on time for every step of the process, including interviews.
Safety and Compliance
Working as a plumber means dealing with pressurized water, gas, and sometimes hazardous substances.
Warning: OSHA requires proper protective equipment and safety training for all plumbing work involving confined spaces or hazardous materials.
Learn safety rules from the start-they are part of the licensing exam and your day-to-day job.
Summary and next steps
If you want to become a licensed plumber in Illinois, start by deciding which training route fits you union apprenticeship, college partnership, or private training. Make sure the program is approved by the state. Then apply for your apprentice plumber’s license through IDPH.
Your next step:
Check the IDPH Apprenticeship Application page and contact at least two programs from the list above to compare schedules and requirements. The sooner you apply, the sooner you can start earning while you learn.